consulate in benghazi, libya. today anti-american violence spread throughout the muslim world, all of it sparked by a once-obscure internet film that ridicules the prophet mohammed. the film was produced in the united states. we're going to go first to nancy cordes with the return of the american dead. >> reporter: the remains of the u.s. ambassador to libya and three others were carried off a military plane and into a hangar where the president and other dignitaries state department staffers and the victims' families waited. the families had met privately with the president and secretary of state before the ceremony. >> this has been a difficult week for the state department and for our country. >> reporter: an emotional secretary clinton paid tribute to each man in turn. sphaupb smith joined the state department after six years in the air force. tyrone woods-- known to most as rone-- spent two decades as a navy seal serving multiple tours in iraq and afghanistan. glen doherty-- who went by "bub" was also a forme